221421305

素因数分解:

$5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{18127}}^1$

素因数の和:18488

約数の個数: 16

約数和(自身を含む): 304550400

約数和(自身を除く): 83129095

約数列:

[1, 5, 7, 35, 349, 1745, 2443, 12215, 18127, 90635, 126889, 634445, 6326323, 31631615, 44284261, 221421305]

約数ペア:

[(1, 221421305), (5, 44284261), (7, 31631615), (35, 6326323), (349, 634445), (1745, 126889), (2443, 90635), (12215, 18127)]